Using dtx and drx in a wireless communication system

“USE OF DTX AND DRX IN A WIRELESS COMMUNICATION SYSTEM” Field of the Invention

[0001] The description below refers generally to wireless communications, and more particularly to the use of variable sleep modes to facilitate the reduction of power consumption by a communication device in a wireless communication system.

Description of the Prior Art

[0002] Wireless communication systems are widely used to provide various types of communication; for example, voice and / or data can be provided through such wireless communication systems. A typical wireless communication system, or network, can provide multiple users with access to one or more shared resources (for example, bandwidth, transmission power, ...). For example, a system can use a variety of multiple access techniques such as Frequency Division Multiplexing (FDM),

Time Division Multiplexing (TDM), Code Division Multiplexing (CDM), Long Term Evolution (LTE) Systems of the Third Generation Partners Project (3GPP), Orthogonal Frequency Division Multiplexing (OFDM) and others.

[0003] Generically, multiple wireless access communication systems can simultaneously support communication to multiple mobile devices. Each mobile device can communicate with one or more base stations via transmissions on the links, forward and reverse. The direct link (or downlink) refers to the link

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2/54 communication from base stations to mobile devices, and the reverse link (or uplink) refers to the communication link from mobile devices to base stations. This communication link can be established through a single-input-single-output, multiple-input and signal output or multiple-input and multiple-output (MIMO) system.

[0004] For example, a MIMO system can employ multiple transmit antennas (NT) and multiple receive antennas (NR) for data transmission. A MIMO channel formed by the NT transmission and NR reception antennas can be decomposed into NS independent channels, which are also referred to as space channels, where Ns <min {NT, NR}. Each of the NS independent channels can correspond to a dimension. The MIMO system can provide improved performance (for example, higher throughput and / or greater reliability) if the additional dimensions created by the multiple transmit and receive antennas are used.

[0005] A MIMO system can support duplex time division (TDD) and duplex frequency division (FDD) systems. In a TDD system, forward and reverse link transmissions can be in the same frequency region so that the principle of reciprocity allows the estimation of the direct link channel from the reverse link channel. This can allow the access point to extract gain transmission beam forming the forward link when multiple antennas are available at the access point.

[0006] Wireless communication systems

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3/54 often employ one or more base stations that provide a coverage area. A typical base station can transmit multiple data streams for broadcast (broadcast), multicast (multicast) and / or unicast (unidiffusion) services, where a data stream can be a data stream that may be of interest to independent reception to a mobile device. A mobile device within the coverage area of ​​such a base station can be employed to receive one, more than one, or all of the data streams carried by the composite stream. Similarly, a mobile device can transmit data to the base station or another mobile device.

[0007] Typically, mobile devices use power (for example, battery power) while connected as well as during periods of communication with a base station and / or other mobile devices via the base station. The amount of power consumed by a mobile device may depend in part on the configuration of the mobile device and / or function (for example, operation) being performed by the mobile device. Reducing the amount of power used by a mobile device is desirable since such a reduction can result in prolonged battery life and decreased cost of using the mobile device and battery.

Summary of the Invention

[0008] The following provides a simplified summary of one or more modalities to provide a basic understanding of such modalities. This summary is not an extensive overview of all the modalities considered, and is not intended to even identify elements

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4/54 key or critics of all modalities nor outline the scope of all or any modalities. Its sole purpose is to present some concepts of one or more modalities in a simplified form as a prelude to the more detailed description that is presented later.

[0009] According to one or more modalities and the corresponding description of these, several aspects are described in relation to the facilitation of a reduction of the power consumption in a communication device (for example, mobile device) by employing several modes of rest in the communication device. A mobile device can use a sleep mode controller that can facilitate selection and / or switching to a desired sleep mode based in part on predefined sleep mode criteria. The rest modes can include a non-rest mode, light rest mode, and / or deep rest mode, for example. The mobile device may employ an analyzer that can operate in combination with the sleep mode controller to evaluate information relevant for determining sleep mode transitions, such as explicit signals (for example, base station message instructing a change in sleep mode) ), implicit signals (for example, no data change between the mobile device and base station for a predetermined period of time), the current state of the sleep mode, and / or rest mode states available to determine whether a condition is met based, in part, on predefined rest mode criteria, such that a transition to a different rest mode should be

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5/54 executed. If such a condition is met, the sleep mode controller can facilitate the transition from the current sleep mode to a different sleep mode to facilitate the reduction of power consumption by the mobile device.

[0010] According to related aspects, a method to facilitate the selection of a sleep mode associated with a mobile device is described here. The method may include signaling to facilitate selection of a sleep mode. In addition, the method may comprise selecting a rest mode based, in part, on a predefined rest mode criterion.

[0011] Another aspect concerns a wireless communication device. The wireless communication device may include a memory that holds instructions related to the selection of a sleep mode based, in part, on a predefined sleep mode criterion. In addition, the wireless communication device may include a processor, attached to the memory, configured to execute the instructions held in the memory.

[0012] Yet another aspect refers to a wireless communication device that facilitates the selection of a sleep mode. The wireless communication device may include means for signaling to facilitate the selection of a sleep mode. In addition, the wireless communication device may comprise means for selecting a sleep mode based, in part, on a predefined sleep mode criterion.

[0013] Yet another aspect refers to a machine-readable medium having stored in it, instructions

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6/54 executable by signaling machine to facilitate a transition from a first sleep mode to another sleep mode; and selecting a sleep mode based, in part, on a predefined sleep mode criterion.

[0014] According to another aspect, a device in a wireless communication system may include a processor, where the processor can be configured to signal to select a sleep mode when a condition is met based in part on a criterion of predefined sleep mode. In addition, the processor can be configured to select a sleep mode based in part on the predefined sleep mode criteria.

[0015] According to other aspects, a method that facilitates rest mode transitions associated with a mobile device is described here. The method may include evaluating information related to transitions from sleep mode associated with the mobile device. In addition, the method may include transmitting a signal to facilitate a transition from a first rest mode to another rest mode based, in part, on a predefined rest mode criterion.

[0016] Yet another aspect concerns a wireless communication device that can include a memory that holds instructions related to the signaling associated with selecting a sleep mode, and selecting a sleep mode associated with a mobile device based on, in part, in a predefined rest mode criterion. In addition, the wireless communication device may comprise a processor, coupled to the memory, configured to execute the instructions held in the memory.

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[0017] Another aspect refers to a wireless communication device that facilitates the selection of a sleep mode associated with a mobile device in a wireless communication environment. The wireless communication device may include means for signaling to facilitate the selection of a sleep mode. In addition, the wireless communication device may include means for selecting a sleep mode based, in part, on a predefined sleep mode criterion.

[0018] Yet another aspect refers to a machine-readable medium having stored in it, machine-executable instructions for evaluating information associated with the transition to a specific rest mode based, in part, on a pre-rest mode criterion. defined, and signal a transition to the specific rest mode when a transition condition associated with the predefined rest mode criterion is met.

[0019] According to another aspect, a device in a wireless communication system may include a processor, where the processor can be configured to evaluate information associated with rest mode transitions based, in part, on a mode criterion rest. In addition, the processor can be configured to select a sleep mode associated with a mobile device. In addition, the processor can be configured to transmit at least one signal associated with a transition from a first sleep mode to a different sleep mode. The processor can be additionally configured to schedule data changes associated with the mobile device.

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[0020] For the accomplishment of the above and related purposes, one or more modalities comprises the characteristics described totally below and particularly pointed out in the claims. The following description and attached drawings set out in detail certain illustrative aspects of one or more modalities. These aspects are indicative, however, of some of the various ways in which the principles of various modalities can be employed and the modalities described are intended to include all of these aspects and their equivalents.

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different sleep modes associated with a mobile device in a wireless communication environment.

[0023] Figure 3 - is an illustration of an exemplary system that can facilitate transitions between different modes of rest associated with a mobile device in a wireless communication environment.

[0024] Figure 4 - is an illustration of an exemplary methodology that can facilitate selecting a sleep mode on a mobile device associated with a wireless communication system.

[0025] Figure 5 - is an illustration of an exemplary methodology that can facilitate the transition to a sleep mode on a mobile device associated with a wireless communication system.

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[0026] Figure 6 - is an illustration of an exemplary mobile device that can facilitate transitions between sleep modes on a mobile device associated with a wireless communication system.

[0027] Figure 7 - is an illustration of an example system that can facilitate transitions between sleep modes in a mobile device associated with a wireless communication system.

[0028] Figure 8 - is an illustration of an exemplary wireless network without environment that can be employed in combination with the various systems and methods described herein.

[0029] Figure 9 - is an illustration of an exemplary system that can facilitate transitions between different sleep modes on a mobile device associated with a wireless communication environment.

[0030] Figure 10 - is an illustration of an exemplary system that can facilitate transitions between different modes of rest in a mobile device associated with a wireless communication environment.

Detailed Description of the Invention

[0031] Several modalities are now described with reference to the drawings, where the same reference numbers are used to refer to similar elements from beginning to end. In the following description, for the sake of explanation, numerous specific details are set out to provide a complete understanding of one or more modalities. It may be evident, however, that such (such) modality (s) can be put into practice without these specific details. In other examples, well-known structures and devices are shown in the form of

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10/54 block diagram to facilitate the description of one or more modalities.

[0032] As used in this application, the terms component, module, system, and the like may refer to a computer-related entity, be it hardware, firmware, a combination of hardware and software, software, or running software. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable, a chain of execution, a program, and / or a computer. As an illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and / or chain of execution and a component can be located on a computer and / or distributed between two or more computers. In addition, these components can run from various computer-readable media having several data structures stored therein. Components can communicate via local and / or remote processes such as according to a signal having one or more data packets (for example, data from one component interacting with another component on a local, distributed system, and / or over a network such as the internet with other systems using the signal).

[0033] In addition, several modalities are described here with respect to a mobile device. A mobile device can also be called a system, subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, access terminal,

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11/54 user terminal, terminal, wireless communication device, user agent, user device, or user equipment (UE). A mobile device can be a cell phone, a conventional cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local circuit station (WLL), a personal digital assistant (PDA), a portable device having wireless capability, computing device, or other processing device connected to a wireless modem. In addition, several modalities are described here with respect to a base station. A base station can be used to communicate with mobile device (s) and can also be referred to as an access point, Node B, or some other terminology.

[0034] In addition, several aspects or features described here can be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques. The term "article of manufacture", as used here, is intended to encompass a computer program accessible from any computer-readable device, carrier or medium. For example, computer-readable media may include, but is not limited to, magnetic storage devices (eg hard disk, floppy disk, magnetic strips, etc.), optical discs (eg compact disc (CD), disk digital versatile (DVD), etc.), smart cards, and flash memory devices (eg, EPROM, card, stick, key drive, etc.). Additionally, various storage media described herein can represent one or more devices and / or other means

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12/54 machine readable to store information. The term "machine-readable medium" may include, without being limited to wireless channels and various other media capable of storing, containing and / or carrying instruction (s) and / or data.

[0035] With reference now to Figure 1, a wireless communication system 100 is illustrated according to the various modalities presented here. System 100 comprises a base station 102 that can include multiple antenna groups. For example, one antenna group may include antennas 104 and 106, another group may comprise antennas 108 and 110, and an additional group may include antennas 112 and 114. Two antennas are illustrated for each antenna group; however, a greater or lesser number of antennas can be used for each group. The base station

102 it may additionally include a transmitter and a receiver chain, each of which may in turn comprise a plurality of components associated with the transmission and reception of signals (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc. .), as will be recognized by a person skilled in the art.

[0036] Base station 102 can communicate with one or more mobile devices such as mobile device 116 and mobile device 122; however, it must be recognized that base station 102 can communicate substantially with any number of mobile devices similar to mobile devices 116 and 122. Mobile devices 116 and 122 can be, for example, cell phones, smart phones, laptops, communication devices portable devices,

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13/54 handheld computing, satellite radios, global positioning systems, PDAs, and / or any other device suitable for communicating via wireless communication system 100. As shown, mobile device 116 is in communication with antennas 112 and 114 , where antennas 112 and 114 transmit information to the mobile device 116 via a direct link 118 and receive information from the mobile device 116 via a reverse link 120. In addition, mobile device 122 is in communication with antennas 104 and 106, where antennas 104 and 106 transmit information to mobile device 122 over a direct link 124 and receive information from mobile device 122 over a reverse link 126. In a frequency division duplex (FDD) system, direct link 118 may use a different frequency band than that used by reverse link 120, and direct link 124 may employ a different frequency band than that employed by the link reverse 126, for example. In addition, in a time division duplex (TDD) system, forward link 118 and reverse link 120 may use a common frequency band, and forward link 124 and reverse link 120 may use a common frequency.

[0037] Each group of antennas and / or the area in which they are designated to communicate can be referred to as a sector of the base station 102. For example, antenna groups can be designed to communicate with mobile devices (for example, 116 ) in a sector of the areas covered by base station 102. In communication through direct links 118 and 124, the antennas of

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14/54 transmission from base station 102 may use beam formation to improve the signal-to-noise ratio of direct links 118 and 124 for mobile devices 116 and 122. In addition, although base station 102 uses beamforming to transmit to mobile devices 116 and 122 randomly dispersed through an associated cover, mobile devices in neighboring cells may be subject to less interference compared to a base station that transmits over a single antenna for all your mobile devices.

[0038] According to one aspect, a mobile device (eg 116) can be configured in such a way that such a mobile device can transition (eg switch) between different modes, such as deep sleep mode (DS - Deep Sleep), light sleep mode (LS - Light Sleep) and / or continuous reception mode (CRX) based, in part, on predefined sleep mode criteria. In one aspect, the mobile device (for example, 116) may have cycles (for example, batch transmission (DTX)) where each cycle can include an activated period where the mobile device can monitor base station 102 transmissions and / or a period deactivated where the radio frequency (RF) generation can be turned off on the mobile device to facilitate the reduction of power consumption. The length of a specific cycle associated with a specific mode can be based in part on the total length of a respective deactivated period combined with a respective activated period within the cycle. So, for example, since the deactivated period associated with DS mode can be longer

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15/54 longer than the deactivated period associated with LS mode, the DRX cycle for DS mode can be longer in length than the DRX cycle for LS mode. In one aspect, DS mode can have a cycle (for example, DRX cycle) with a specified deactivated period associated with discontinuous reception (DRX) that can be longer than the specified deactivated period for a cycle associated with LS mode or the off period specified for a cycle associated with CRX mode (for example, which can have its off period set to 0) to facilitate the reduction of power consumption (for example, to reduce the use of battery power). During the deactivated period, the mobile device (for example, 116) can turn off (for example, deactivate) its RF generation (for example, where there is also a discontinuous transmission period (DTX)) where during the deactivated period the mobile device does not is able to receive data or control information, to facilitate the reduction of power consumption. DS mode can also have a specified deactivated period associated with DTX which can be longer than the deactivated period associated with LS mode or CRX mode (for example, which can have its deactivated period set to 0) to facilitate reducing the power consumption. DS mode can still have an activated period of time specified during a cycle, where the activated period can occur less frequently than an activated period for LS mode, and where the mobile device (e.g. 116) can receive certain information ( for example, control information) during such activated periods. DS mode can also have an activated time period specified during a cycle

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DTX. While in DS mode, the mobile device (for example, 116) is not able to transmit data through the data channel, but can receive and / or transmit control information through the control channel during the activated period (for example, intervals enabled). To exchange data with base station 102, the mobile device (for example, 116) must transition out of DS mode to LS mode or CRX mode.

[0039] The LS mode can have a different cycle than the DS mode, since the disabled period associated with DRX, in comparison with the DS mode, can have a shorter length of time than the disabled period associated with DRX of the DS mode. The LS mode can also have a defined period of time associated with DTX that can be shorter than the period of time associated with DTX in DS mode. LS mode can still have a defined period of time activated related to DRX, which can occur more frequently than periods activated for DS mode (however it can occur less frequently than CRX mode, which can be activated continuously to receive information ), where control data and / or information can be received during such non-DRX partitions. LS mode can have a defined activated time period associated with DTX. While in LS mode, the mobile device (for example, 116) can transmit and / or receive data through the data channel and / or control information through the control channel. In LS mode, the mobile device (eg 116) can facilitate a reduction in power consumption, although the reduction in power consumption is not typically as large as the

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17/54 reduced power consumption while in DS mode.

[0040] In CRX mode, the mobile device (for example, 116) can be in a state where it is activated (for example, in non-DRX mode) at all times while in such a mode, and is capable of receiving data and / or control information. That is, in CRX mode, the deactivated period can be set to 0 so that there is no deactivated period during a cycle. According to one modality, the CRX mode (for example, non-rest mode) can be considered a special mode associated with the LS mode, where for the CRX mode, the deactivated period can be set to 0, where the cycle can be composed of a series of activated intervals, for example, so that the mobile device (for example, 116) can be in a continuously activated state. In this way, LS mode can be configured so that the deactivated period is set to 0, and the mobile device (for example, 116) can be in a continuously activated state. While in CRX mode, the mobile device (eg 116) can typically consume more power than when the mobile device is in LS mode or DS mode.

[0041] The length of a disabled period (for example, respectively associated with DRX and DTX) can be configurable, as desired, and can vary from 0, which can be associated with CRX mode, for example, to a desired number of seconds (for example, 2 seconds), where the length of the disabled period can typically be longer for DS mode than LS mode. The length of an activated period (for example, associated with DRX and DTX respectively) can be configurable, as desired, and can

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18/54 vary from 1 ms to more than 1 ms. The respective lengths of a deactivated period and / or an activated period can be based in part on the type of mode (for example, DS mode, LS mode, CRX mode). Base station 102 can schedule and / or process data transmissions between base station 102 and the mobile device (for example, 116) when the mobile device is in an activated period (for example, activated interval), except that while in mode DS, the mobile device (for example, 116) cannot exchange data with base station 102, but can exchange control information with base station 102.

[0042] Each of the DS mode, LS mode and CRX mode can also be configured based in part on the respective CQI attributes, respective sound reference signal (SRS) attributes, respective measurement events, and / or respective values timer, where timer values ​​can be used to facilitate determining when the mobile device (eg 116) should transition from one mode to another mode. For example, CQI attributes can be configured or updated based in part on the type of sleep mode, or transition from one sleep mode to another sleep mode.

[0043] With respect to the predefined criteria of the sleep mode, such criteria can relate, for example, to an explicit signal (for example, control message) from the base station 102 indicating and / or directing the mobile device ( 116) to transition from one mode to another mode (for example, from LS mode to DS mode) and / or an implicit signal (for example, lack of

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19/54 data communication associated with the mobile device for a predetermined period of time or longer). The mobile device (eg 116) can monitor and analyze information received, such as control messages, data messages, and / or information regarding the length of time between events (for example, receiving or sending a data or information transmission) control) and / or the type of events that occur, and you can control the selection of, and / or switching between, the different modes based in part on the predefined criteria of the sleep mode. The mobile device (for example, 116) can also track the length of time between events to facilitate the determination of whether the predetermined time period has elapsed between specific events in order to trigger a transition from one mode to another mode. The mobile device (eg 116) can transition to LS mode or DS mode based, in part, on predefined sleep mode criteria to facilitate the reduction of power consumption. As a result, the mobile device (eg 116) can facilitate a reduction in power consumption compared to conventional mobile devices.

[0044] In one aspect, when the mobile device (eg 116) is in DS mode, an implicit signal to transition from DS mode to LS mode may include receiving information regarding a downlink data transmission such as a schedule of a downlink data transmission from base station 102 to the mobile device (for example, 116) or access or schedule a transmission

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20/54 uplink data (for example, scheduled uplink transmission) and after any of the events mentioned above have occurred, the predefined sleep mode criteria may indicate that the mobile device should transition from DS mode to the LS mode. The mobile device (eg 116) can transition from DS mode to LS mode after the occurrence of any such (any) event (s) based in part on the predefined sleep mode criteria.

[0045] If in DS mode, a mobile device (for example, 116) can still transmit uplink control signals at predefined time events (for example, during activated periods). The mobile device (for example, 116) can also remain in DS mode if it receives special control information through the control channel (for example, PDCCH). For example, while in DS mode, the mobile device (eg 116) can receive power control information, Layer 1 control channel message (eg physical layer) / Layer 2 (eg link layer) (L1 / L2), or up / down commands. For example, when the mobile device (eg 116) receives information, the mobile device (eg 116) can signal to base station 102 that only the L1 / L2 control is successfully decoded (eg where the transmission downlink data is not successfully decoded), and the signal can be a negative acknowledgment (NAK); or the mobile device can signal that both the L1 / L2 control and the programmed downlink (for example, data) are

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21/54 successfully decoded, which can be a confirmation (ACK).

[0046] As an example of another implicit signal, while the mobile device (eg 116) is in LS mode, if the mobile device does not exchange (eg transmit and / or receive) data with base station 102 for a period for a predetermined time, the predefined sleep mode criteria can specify that the mobile device should transition from LS mode to DS mode, and the mobile device can switch from LS mode to DS mode, to facilitate the reduction of power consumption on the mobile device. The mobile device (for example, 116) can be configured in such a way that the implicit signals for the transitions from DS mode to LS mode, and from LS mode to DS mode, associated with DRX may correspond to or be limited with the transitions from DS mode to LS mode, and from LS mode to DS mode, associated with DTX, or the transitions respectively associated with DRX and DTX can be configured without regard to each other. Where the mobile device (eg 116) is accessing in DS mode associated with DRX, the mobile device is typically not able to transition out of DS mode until it receives implicit or explicit confirmation regarding access from base station 102.

[0047] Yet another example of an implicit signal can relate to the transition between CRX mode and LS mode. While the mobile device (eg 116) is in CRX mode, if the mobile device (eg 116) does not exchange (eg transmit and / or receive) data with base station 102 for an amount of time

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22/54 predetermined, predefined sleep mode criteria can specify that the mobile device must transition from CRX mode to LS mode, and the mobile device can switch from CRX mode to LS mode, to facilitate reduction power consumption on the mobile device.

[0048] With respect to the explicit signal, an explicit signal can include an L1 / L2 control message, and / or an L1 / L2 control message and a programmed data downlink (for example, control channel L1 / L2 + DL SCH), sent from base station 102 to the mobile device (eg 116), where the pre-defined sleep mode criteria can provide that after receiving such an explicit signal, the mobile device must transition from DS mode to LS mode (for example, with respect to DRX and / or DTX), and the mobile device can transition from DS mode to LS mode. An explicit signal can be generated by base station 102 and sent to the mobile device (eg 116) for example, when base station 102 knows that there will be no data exchange, and / or there has been no data exchange, between the station base 102 and the mobile device for a predefined period of time based in part on the predefined sleep mode criteria. Base station 102 can also track the amount of time that has elapsed between data exchanges with the mobile device (e.g., 116) to facilitate determining whether a predefined time period has elapsed between data exchanges.

[0049] As another example of an explicit sign, an explicit sign can also include a

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23/54 L1 / L2 control message, and / or an L1 / L2 control message and a programmed downlink of data, sent from base station 102 to the mobile device (eg 116), where the predefined criteria from sleep mode can provide that after receiving such an explicit signal, the mobile device must transition from LS to DS mode (for example, with respect to DRX and / or DTX), and the mobile device can transition from LS mode to DS mode.

[0050] Another example of an explicit signal may relate to the transition from / to CRX mode to / from LS mode or DS mode. Such an explicit signal may include an L1 / L2 control message, and / or an L1 / L2 control message and a programmed downlink of data, sent from base station 102 to the mobile device (eg 116), where the criteria predefined sleep mode settings can provide that after receiving such an explicit signal, the mobile device must transition from / to CRX mode to / from LS mode or DS mode (for example, with respect to DRX and / or DTX) , and the mobile device can make the transition from / to CRX mode to / from the desired mode (for example, LS mode, DS mode), as specified in the message providing the explicit signal.

[0051] According to another aspect, the mobile device (for example, 116) can be configured to send CQI information. The CQI offset can vary from 0 to several intervals, for example. It may be desirable to synchronize the uplinks when sending CQI information. CQI cannot typically be sent if the deactivated period (for example, associated with DRX) is a period

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24/54 significant time (for example, 2 seconds or more) and there is a possibility of losing synchronization. It may also be desirable to be power controlled when sending CQI information, since there may be little benefit from sending CQI if the probability of successful decoding at base station 102 is low. To facilitate power control, an additional broadband reference signal can be provided with the CQI. For example, SRS can be employed when sending CQI from the mobile device (eg 116) to base station 102. CQI information can be used by base station 102 to facilitate determining the appropriate data transmission rates between base station 102 and the mobile device (e.g., 116), as a channel with a higher quality indicator, typically can support a higher data transmission rate than a channel with a lower quality indicator.

[0052] In one embodiment, the mobile device (for example, 116) can employ CRX mode, LS mode, and DS mode (for example, DRX and / or DTX). Such a modality of the present innovation can result in a substantial reduction in power consumption by the mobile device (for example, 116) compared to conventional mobile devices, while also providing appropriate support for certain applications, such as games or Voice over Internet Protocol (VoIP) , for example. The mobile device can transition between LS mode and DS mode (for example, DRX and / or DTX) based, in part, on explicit signaling and / or implicit signaling. Explicit signaling can also be used to facilitate the transition to and / or from CRX mode (for example,

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25/54 example, with respect to DRX and / or DTX).

[0053] According to another modality, the mobile device (for example, 116) can employ CRX mode and LS mode (for example, DRX and / or DTX). As a result, there may be a reduction in power consumption (for example, when transitioning to LS mode) by the mobile device (for example, 116) compared to conventional mobile devices, while also providing appropriate support for certain applications, such as games or VoIP, for example. Transitions between CRX mode and LS mode can be performed using explicit signaling and / or implicit signaling.

[0054] According to yet another modality, the mobile device (for example, 116) can employ CRX mode and DS mode (for example, DRX and / or DTX). As a result there can be a significant reduction in power consumption (for example, when making the transition to DS mode) by the mobile device (for example, 116), compared to conventional mobile devices. Transitions between the CRX mode and DS mode can be performed using explicit signaling and / or implicit signaling, for example.

[0055] With reference to Figure 2, a system 200 is illustrated that can facilitate transitions between different sleep modes associated with a mobile device in a wireless communication environment. System 200 includes a base station 102 that can communicate with one or more mobile devices, such as mobile device 116. It should be recognized and understood that only one mobile device is represented in Figure 2 for clarity and brevity. In addition, base station 102 can communicate with other (s)

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26/54 base station (s) and / or any different devices (for example, servers) (not shown) that can perform functions such as, for example, authentication, authorization, accounting, charging, and so on. The base station 102 and mobile device 116 can be, the same or similar, and / or can respectively comprise the same or similar functionality, as respective components as described more fully here, as, for example, with respect to system 100.

[0056] The mobile device 116 can be connected communicatively (for example, wireless connection) to the base station 102, where the connection can comprise a data channel and a control channel. The data channel can facilitate the transmission of data between the mobile device 116 and the base station 102, and the control channel can facilitate the transmission of control information between the mobile device and the base station 102.

[0057] In one aspect, the mobile device 116 may include a sleep mode controller 202 that can facilitate the transition of the mobile device 116 between the various sleep modes, such as DS mode, LS mode and / or CRX mode (e.g. example, with respect to DRX and DTX) based in part on predefined sleep mode criteria that can be stored in data storage 204. The sleep mode controller 202 can facilitate the retrieval of information associated with predefined sleep mode criteria from data storage 204, and can provide the predefined sleep mode criteria for an analyzer component 206 that can evaluate information received regarding the activity (for

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27/54 example, data exchanges associated with the mobile device 116) and can compare such received information with the predefined sleep mode criteria to facilitate the determination of whether the mobile device 116 should transition from one mode to another mode .

[0058] It will be recognized that the data storage 204 described here may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. As an illustration and not a limitation, non-volatile memory may include read memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable PROM (EEPROM), flash memory, and / or non-random access memory -volatile (NVRAM). Volatile memory can include random access memory (RAM), which can act as external cache memory. As an illustration and not a limitation, RAM is available in many ways such as synchronous RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDR SDRAM), optimized SDRAM (ESDRAM), DRAM Synchlink (SLDRAM) and RAM direct Rambus (DRRAM). The memory 608 of the present systems and methods is intended to be understood, without being limited to these and any other appropriate types of memory.

[0059] The mobile device 116 can also include a timer 208 that can track the amount of time that has elapsed between the occurrence of events, such as, for example, the amount of time that has elapsed between data exchange associated with the mobile device 116. Timer 208 can provide information regarding the elapsed time between events for the

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28/54 rest 202 and / or analyzer 206 to facilitate the determination of whether the mobile device 116 was inactive with respect to data exchange for a predetermined amount of time or greater, where such predetermined amount of time can be specified by the predefined criteria of sleep mode, and where different predetermined amounts of time may be employed with respect to different types of transitions (for example, a predetermined amount of time associated with determining whether to transition from CRX mode to LS mode; a different predetermined amount of time associated with determining whether to transition between LS mode and DS mode) and / or different types of transmissions (for example, data reception, data transmission).

[0060] For example, mobile device 116 may be in CRX mode, and analyzer component 206 may receive time information from timer 208 indicating that there has been no data exchange between mobile device 116 and base station 102 for two seconds. The analyzer 206 can compare this time information with the predefined criteria of the sleep mode, which in this example, can specify that the mobile device 116 must be transitioned from the CRX mode to the LS mode if two or more seconds have elapsed. since the last data exchange. Analyzer 206 can determine that the predefined sleep mode criteria have been met to make the transition from CRX mode to LS mode, and can communicate that determination to the sleep mode controller 202. The sleep mode controller 202 can facilitate the transition (eg switching) of the

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29/54 mobile device 116 from CRX mode to LS mode based in part on the predetermined determination and / or criteria of the standby mode. The elapsed time that meets the predefined criteria from sleep mode to transition from CRX mode to LS mode can be an implicit signal to perform such a transition.

[0061] As another example, a mobile device 116 may be in LS mode. Mobile device 116 can receive an explicit signal, such as an L1 / L2 control channel or L1 / L2 + DL SCH control, from base station 102 which indicates that mobile device 116 must transition from LS mode to DS mode . Such a message can be provided to analyzer 206, which can compare the received message with the predefined sleep mode criteria, where such criteria can specify that a transition from LS mode to DS mode should be performed after receiving such a message, and analyzer 206 can determine that there must be a transition from LS mode to DS mode. The analyzer 206 can communicate this determination to the sleep mode controller 202, and the sleep mode controller 202 can facilitate the transition of mobile device 116 from LS mode to DS mode.

[0062] Now with reference to Figure 3, a system 300 is illustrated that can facilitate transitions between different sleep modes associated with a mobile device in a wireless communication environment. System 300 includes a base station 102 that can communicate with one or more mobile devices, such as mobile device 116. It should be recognized and understood that only one mobile device is represented in Figure 3 for clarity and

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30/54 brevity. In addition, base station 102 can communicate with other base station (s) and / or any different devices (for example, servers) (not shown) that can perform functions such as authentication, authorization, accounting, charging, and so on. The base station 102 and mobile device 116 can each be the same or similar respectively, and / or can comprise respectively the same or similar functionality to respective components as described more fully here, as, for example, with respect to system 100 and / or system 200.

[0063] The base station 102 may include a controller 302 that can facilitate control of transitions between various sleep modes on the mobile device 116. For example, controller 302 in combination with analyzer 304 can facilitate the evaluation and / or comparison of information relevant to transition determinations in view of the predefined sleep mode criteria to facilitate the determination of whether to generate and send a signal explicit (e.g., control message) to mobile device 116 directing mobile device 116 to transition from a sleep mode to another mode.

[0064] Base station 102 can also include a timer 306 that can track the length of time that elapsed between data exchanges, or the last data exchange, between base station 102 and mobile device 116. Timer 306 can provide this time information for controller 302 and / or analyzer 304, and that time information can be evaluated (for example,

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31/54 compared) in relation to the predefined sleep mode criteria to facilitate the determination of whether a transition should be performed.

[0065] Base station 102 may also comprise a programmer 308 that can program uplink and / or downlink transmissions between base station 102 and mobile device 116. Programmer 308 can program downlink transmissions to occur when the mobile device 116 is in an activated period or state (for example, LS mode activated period, or CRX mode which may be in a continuous activated state). Programmer 308 may also program that uplink transmissions occur when the mobile device 116 is in an activated period (for example, LS mode activated period, or CRX mode which can be in a continuous activated state). The programmer

308 it can facilitate the transmission of the desired control messages and / or associated data as part of the specific transmission.

[0066] With reference to Figures 4-5, methodologies regarding the selection of sleep modes and / or transition between sleep modes associated with a mobile device in a wireless communication environment are illustrated. While, for the sake of simplicity of explanation, methodologies are shown and described as a series of acts, it must be understood and recognized that methodologies are not limited by the order of acts, since some acts may, according to one or more modalities , occur in different and / or concurrently with other acts orders from these shown and

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32/54 described here. For example, those skilled in the art will understand and recognize that a methodology could alternatively be represented as a series of interrelated states or events, such as in a state diagram. In addition, not all illustrated acts may be necessary to implement a methodology according to one or more modalities.

[0067] With reference to Figure 4, a methodology 400 is illustrated that can facilitate the selection of a sleep mode on a mobile device associated with a wireless communication system. In 402, a sleep mode can be selected based in part on a predefined sleep mode criterion. In one aspect, the available sleep modes to be selected can include an LS mode, a DS mode, and / or a non-sleep mode (for example, CRX mode). The mobile device can facilitate the selection of the desired sleep mode. At 404, there may be a signal to facilitate the selection of the sleep mode. For example, the signaling can be an explicit signaling, such as a control message from the base station (for example, 102) to a mobile device (for example, 116), instructing the mobile device to transition from a sleep mode. to another sleep mode by selecting another sleep mode; or it can be an implicit signaling that can be based in part on a condition being met, such as a predetermined length of time that elapses between the last data exchange between the base station and the mobile device, where the condition (s) ) can be defined by the predefined criteria of the sleep mode, for example.

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[0068] Going back to Figure 5, a 500 methodology is illustrated that can facilitate the transition to a sleep mode on a mobile device associated with a wireless communication system. At 502, information related to a mode (s) of rest can be evaluated. In one aspect, an analyzer associated with a mobile device (eg 116) or a base station (eg 102) can evaluate information related to sleep modes, such as information related to amount of time elapsed since last data exchange between the base station and mobile device. In 504, a determination can be made as to whether a transition from a first resting mode to another resting mode should be performed, based in part on the predefined resting mode criteria. For example, the analyzer can make a determination as to whether to transition from an LS mode to a DS mode after evaluating information received related to the sleep modes and comparing that received information with the predefined criteria of the sleep mode to determine whether a transition condition has been met. In 506, there may be a signal to facilitate a transition from the first sleep mode to another sleep mode. For example, if it is determined that a transition condition has been met in part based on the information received and / or the predefined criteria of the sleep mode, an explicit and / or implicit signal can be generated to facilitate the transition from the first mode from rest to another sleep mode. An explicit signaling can be a control message from the base station to the mobile device indicating that the

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34/54 mobile device must transition from the first sleep mode to another sleep mode. An implicit signal can be, for example, a certain condition related to the criterion of the predefined rest mode being met, where the given condition being met can indicate (for example, implicit signal) for the mobile device and / or base station that the mobile device must transition from the first sleep mode to another sleep mode. In 508, there may be a transition from the first mode of rest to the other mode of rest. For example, the signal may indicate that the mobile device should transition from the first sleep mode (for example, LS mode) to another sleep mode (for example, DS mode).

[0069] It will be recognized that, according to one or more aspects described here, inferences can be made regarding the selection of the sleep modes and / or determine when to make the transition between sleep modes in relation to a mobile device. As used here, the term infer or inference generally refers to the process of reasoning about or inferring states of the system, environment, and / or user of a set of observations as captured through events and / or data. Inference can be used to identify a specific context or action, or it can generate a probability distribution across states, for example. The inference can be probabilistic - that is, the computation of a distribution of probabilities through states of interest based on a consideration of data and events. Inference can also refer to techniques used to compose higher level events from a set of events and / or

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35/54 data. Such inference results in the construction of new events or actions from a set of observed events and / or stored event data, whether or not the events are correlated in close temporal proximity, and whether the events and data originate from one or more data sources and events.

[007 0] According to an example, one or more methods presented above may include making an inference (s) relevant to the selection of a rest mode and / or transition from a rest mode to another rest mode. As an additional illustration, an inference (s) can be made regarding the determination of whether a transition between a resting mode and another resting mode should be performed or has occurred. It will be recognized that the examples above are illustrative in nature and are not intended to limit the number of inferences that can be made or the way in which such inferences are made in combination with the various modalities and / or methods described here.

[0071] Figure 6 is an illustration of a mobile device 600 that can facilitate transitions between sleep modes on a mobile device associated with a wireless communication system. The mobile device 600 comprises a receiver 602 that receives a signal from, for example, a receiving antenna (not shown), and performs typical actions on the (e.g., filters, amplifies, downwards converts, etc.) received signal and scans the conditioned signal to obtain samples. The receiver 602 can be, for example, an MMSE receiver, and can comprise a demodulator 604 that can demodulate received symbols and provide them to a processor 606 for

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36/54 channel estimation. The processor 606 can be a processor dedicated to analyzing information received by the receiver 602 and / or generating information for transmission by a transmitter 608, a processor that controls one or more components of the mobile device 600, and / or a processor that both analyzes information received by receiver 602, generates information for transmission by transmitter 608, and controls one or more components of the mobile device 600. The mobile device 600 may also comprise a modulator

610 which can work in combination with the transmitter 608 to facilitate the transmission of signals (for example, data) to, for example, a base station 102, another mobile device, etc.

The processor 606 may also comprise a sleep mode controller 202 which can facilitate determining and / or controlling transitions between the various sleep modes associated with the mobile device 116. It must be recognized and understood that the sleep mode controller 202 it may be the same or similar to, or it may comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 200. It should also be recognized and understood that the sleep mode controller 202 may be included within processor 606 (as shown), may be an independent unit, may be incorporated into another component, and / or virtually any appropriate combination thereof, as desired .

[0073] The mobile device 600 may additionally comprise data storage 204 which can be operatively coupled to the processor 606 and

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37/54 can store data to be transmitted, data received, information related to the predefined criteria of sleep mode, information (for example, time elapsed between data exchanges, explicit signals, implicit signals, ...) relevant to determinations regarding transitions between the various resting modes, and any other appropriate information that can facilitate the determination of whether to transition from one resting mode to another mode. The data store 204 can additionally store associated protocols and / or algorithms and facilitate the determination of whether to transition from a rest mode to another mode. It should be recognized that data storage 204 can be the same or similar to, or can comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 200.

[0074] Processor 606 can be operatively coupled to analyzer 206 which can evaluate information, such as information related to determinations regarding transitions between the various rest modes. It should be recognized that analyzer 206 may be the same or similar to, or may comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 200. It should be further recognized and understood that analyzer 206 may be an independent unit (as shown), may be included in processor 606, may be incorporated into another component and / or virtually any appropriate combination thereof,

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38/54 as desired.

[0075] Processor 606 can also be operatively coupled to timer 208 which can track the amount of time elapsed between data exchanges, or since the last data exchange, between mobile device 116 and base station 102 to facilitate determinations regarding transitions between the various resting modes. It should be recognized that timer 208 may be the same or similar to, or may comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 200. It should also be recognized and understood that timer 208 may be an independent unit (as shown), may be included in processor 606, may be incorporated into another component, and / or virtually any appropriate combination of these, as desired.

[0076] Figure 7 is an illustration of a system 700 that can facilitate transitions between sleep modes in a mobile device associated with a wireless communication system. The system 700 comprises a base station 102 (e.g., access point, ...) with a receiver 702 that can receive signal (s) from one or more mobile devices 116 through a plurality of receiving antennas 704, and a transmitter 706 which can transmit signals (e.g., data) to one or more mobile devices 116 via a transmitting antenna 708. The receiver 702 can receive information from the receiving antennas 704 and can be operatively associated with a demodulator 710 that can demodulate

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39/54 information received. Demodulated symbols can be analyzed by a processor 712 which can be a processor dedicated to analyzing information received by receiver 702 and / or generating information for transmission by a transmitter 706, a processor that controls one or more base station components 102, and / or a processor that both analyzes information received by receiver 702, generates information for transmission by transmitter 706, and controls one or more base station components 102. Base station 102 can also comprise a modulator 714 which can work in combination with transmitter 706 to facilitate transmission of signals (e.g., data), for, for example, a mobile device 116, another device, etc.

[0077] The processor 712 can be coupled to a memory 716 that can store information related to the data to be transmitted, data received, information related to the predefined criteria of sleep mode, information (for example, time elapsed between data exchanges, signals explicit, implicit signals, ...) relevant to determinations regarding transitions between the various modes of rest, and any other appropriate information that can facilitate determining whether to transition from one sleep mode to another mode. Memory 716 can additionally store protocols and / or algorithms associated with and facilitate the determination of whether the mobile device 116 should transition from a sleep mode to another mode.

[0078] Processor 712 can be and / or can comprise controller 302 which can facilitate the

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40/54 making determinations associated with transitions between various sleep modes on a mobile device 116. It should be recognized and understood that controller 302 may be the same or similar to, or may comprise, equal or similar functionality to, respective components as described further completely here, for example, with respect to the 300 system. It should also be recognized and understood that controller 302 can be included in processor 712 (as shown), can be an independent unit, can be incorporated within another component, and / or virtually any appropriate combination thereof, as desired.

[0079] Processor 712 can be coupled to an analyzer 304 which can evaluate information related to mobile device 116, such as information relevant to determinations regarding transitions between various sleep modes on mobile device 116, and can analyze predefined sleep mode criteria to facilitate the determination of whether a mobile device 116 should be transitioned from one idle mode to another mode. The analyzer 304 can receive information obtained from the mobile device 116 and / or information (for example, elapsed time information related to data exchanges) generated within the base station 102, and such information can be evaluated to facilitate the performance of determinations transition. It should be recognized that analyzer 304 may be the same or similar to, or may comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 300. It must also be recognized and understood that analyzer 304 can be one

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41/54 independent unit (as shown), can be included within the 712 processor, can be incorporated into another component, and / or virtually any appropriate combination of these, as desired.

[0080] Processor 712 can also be operatively coupled to timer 306 that can track the time elapsed between data exchange, or since the last data exchange, between mobile device 116 and base station 102 to facilitate determinations regarding transitions between the various resting modes. It should be recognized that timer 306 can be the same or similar to, or can comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 300. It should also be recognized and understood that timer 306 can be an independent unit (as shown), can be included in processor 712, can be incorporated within another component, and / or virtually any appropriate combination of these, as desired.

[0081] Processor 712 can also be operatively coupled to programmer 308 which can program data transmissions (for example, uplink, downlink) between base station 102 and a mobile device 116. It should be recognized that programmer 308 can be equal to or similar to, or may comprise functionality equal to or similar to, respective components as described more fully here, for example, with respect to system 300. It should also be recognized and understood that the 308 programmer can be a

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42/54 independent unit (as shown), can be included within the 712 processor, can be incorporated into another component, and / or virtually any appropriate combination of these, as desired.

[0082] Figure 8 shows an exemplary wireless communication system 800. The wireless communication system 800 represents a base station 810 and a mobile device 850 for the sake of brevity. However, it should be recognized that the 800 system may include more than one base station and / or more than one mobile device, where additional base stations and / or mobile devices may be substantially similar to or different from the exemplary base station 810 and the mobile device 850 Described below. In addition, it must be recognized that the base station 810 and / or mobile device 850 can employ the systems (Figures 1-3, 6-7 and 9-10) and / or methods (Figures 4-5) described here to facilitate wireless communication between them. It should be recognized that the base station 810 and the mobile device 850 each can be respectively equal to or similar to, and / or can respectively comprise functionality equal to or similar to, respective components as described more fully here, as, for example, with respect to to system 100, system 200, system 300, system 600 and / or system 700.

[0083] At base station 810, traffic data for various data streams is provided from a data source 812 to a transmission data processor (TX) 814. According to an example, each data stream can be transmitted through a respective antenna. The TX 814 data processor formats, encodes

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43/54 and interleave the traffic data stream based on a specific coding scheme selected for this data stream to provide encrypted data.

[0084] The encoded data for each data stream can be multiplexed with pilot data using orthogonal frequency division (OFDM) multiplexing techniques. Additionally or alternatively, the pilot symbols can be multiplexed by frequency division (FDM), multiplexed by time division (TDM), or multiplexed by code division (CDM). Pilot data is typically a known data standard that is processed in a known manner and can be used on the mobile device 850 to estimate channel response. The encoded data and multiplexed pilots for each data stream can be modulated (for example, mapped in symbols) based on a specific modulation scheme (for example, binary phase shift modulation (BPSK), phase shift modulation in quadrature (QPSK), M-phase shift modulation (MPSK), M-quadrature amplitude modulation (M-QAM), etc.) selected for this data stream to provide modulation symbols. The data rate, encoding and modulation for each data stream can be determined by instructions executed or provided by the 830 processor.

[0085] The modulation symbols for the data streams can be provided to a MIMO TX 820 processor, which can also process the modulation symbols (for example, for OFDM). The MIMO TX 820 processor then provides NT modulation symbol streams for NT transmitters (TMTR) 822a through 822t. In several ways, the processor

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MIMO TX 820 applies beamforming weights to the data stream symbols and the antenna from which the symbol is being transmitted.

[0086] Each transmitter 822 receives and processes a respective symbol stream to provide one or more analog signals, and further conditions (for example, amplifies, filters, and upwards converts) the analog signals to provide an appropriate modulated signal for transmission over the MIMO channel. In addition, NT modulated signals from transmitters 822 to 822t are transmitted from NT antennas 824a to 824t, respectively.

[0087] In the mobile device 850, the transmitted modulated signals are received by antennas NR 852a to 852r and the signal received from each antenna 852 is supplied to a respective receiver (RCVR) 854a to 854r. Each receiver 854 conditions (e.g., filters, amplifies and downwardly converts) a respective signal, digitizes the conditioned signal to provide samples, and also processes the samples to provide a corresponding stream of received symbols.

[0088] An RX 860 data processor can receive and process the received NR symbol streams from NR 854 receivers based on a specific receiver processing technique to provide NT detected symbol streams. The RX 860 data processor can demodulate, de-interleave, and decode each detected symbol stream to retrieve traffic data for the data stream. Processing by the RX 860 data processor is complementary to that performed by the

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45/54 MIMO TX 820 processor and TX 814 data processor on base station 810.

[0089] An 870 processor can periodically determine which pre-coding matrix to use (discussed below). In addition, processor 870 can formulate a reverse link message comprising a matrix index part and a classification value part.

[0090] The reverse link message can comprise several types of information regarding the communication link and / or the received data flow. The reverse link message can be processed by a TX 838 data processor, which also receives traffic data for various data streams from a data source 836, modulated by a modulator 880, conditioned by transmitters 854a to 854r, and transmitted back to base station 810.

[0091] At the base station 810, the signals modulated from the mobile device 850 are received by antennas 824, conditioned by the receivers 822, demodulated by a demodulator 840, and processed by a data processor RX 842 to extract the reverse link message transmitted by the mobile device 850. In addition, the processor 830 can process the extracted message and can determine which pre-coding matrix to use to determine the beam formation weights.

[0092] Processors 830 and 870 can direct (for example, control, coordinate, manage, etc.) the operation on base station 810 and mobile device 850, respectively. The respective processors 830 and

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46/54

870 can be associated with memory 832 and 872 that stores data and program codes. Processors 830 and 870 can also perform computations to derive frequency and impulse response estimates for the uplink and downlink, respectively.

[0093] In one aspect, logical channels are classified into Control Channels and Traffic Channels. Logical Control Channels can comprise Diffusion Control Channel (BCCH) which is the DL channel for spreading system control information. Paging control channel (PCCH) which is the DL channel that transfers paging information. For example, PCCH can be used when the network does not know the UE's location cell. The common control channel (CCCH) which is a channel that can be used to transmit control information between UEs and the network.

This channel can be used by UEs without a connection

RRC with the network. The Multicast Control Channel (MCCH) which is the point-to-multipoint DL channel used to transmit Multicast and Broadcast Multimedia Service (MBMS) control and programming information to one or more MTCHs. Generally, after establishing RRC connection, this channel is used only by UEs that receive MBMS (Note: MCCH + old MSCH). It is observed that it is FFS as MBMS is transmitted by L2 / 3 signaling in MCCH or L1 signaling. The Dedicated Control Channel (DCCH) is a two-way point-to-point channel that transmits dedicated control information and is used by UEs having an RRC connection. In this aspect, Logical Traffic Channels can comprise a dedicated Traffic Channel (DTCH) which is a point-to-point bidirectional channel, dedicated to a UE, for the

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47/54 transfer of user information. A DTCH can be used in both UL and DL. In addition, a Multicast Traffic Channel (MTCH) for a point-to-multipoint DL channel to transmit traffic data. This channel can be used by UEs that receive MBMS.

[0094] In one aspect, Transport Channels are classified in DL and UL. DL Transport Channels comprise a Broadcast Channel (BCH), a Downlink Shared Data Channel (DL-SDCH), a

Paging (PCH), and a Multicast Channel (MCH). A BCH can be characterized by a fixed predefined format and can be spread over the entire cell coverage area. A DLSDCH can be characterized by having support for hybrid automatic repeat request (HARQ); support for dynamic link adaptation by varying modulation, encoding and transmission power; ability to be diffused throughout the cell; ability to use beam formation; support for both dynamic and semi-static resource allocation; support for EU discontinuous reception (DRX) to allow EU power savings; support for MBMS transmission. It is observed that the ability to use slow power control can be based in part on the physical layer. The SHP can be characterized by having EU power saving support (DRX cycle is indicated by the network for the UE); ability to be spread throughout the cell coverage area, and can be mapped to physical resources that can be used dynamically for traffic channels or other control channels. MCH can be characterized by being able to be spread throughout the cell coverage area;

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48/54 support for combining MBSFN from MBMS transmission in multiple cells; and support for semi-static resource allocation (for example, with a time frame of a long cyclic prefix). The UL transport channels comprise a Shared Uplink Channel (UL-SCH), a Random Access Channel (RACH) and a plurality of PHY channels. UL-SCH can be characterized by being able to use beam formation; support for dynamic link adaptation by varying transmission power and potentially modulation and coding; support for HARQ; support for both dynamic and semi-static resource allocation. It is noted that the possibility of using UL synchronization and timing advance may depend in part on the physical layer. RACH can be characterized by having limited control information, and risk of collision. It is observed that the possibility of using open circuit power control may depend in part on the solution of the physical layer. PHY channels comprise a set of DL channels and UL channels.

[0095] The PHY channels (for example, from E-ULTRA) can be: physical diffusion channel (PBCH), the encoded BCH transport block can be mapped to four subframes within a 40 ms interval, 40 ms delay can be detected in a hidden way (for example, there is no explicit signal indicating 40 delay ms), each subframe can be assumed to be self-decoding (for example, the BCH can be a single reception decoder, assuming sufficiently good channel conditions); physical control format indicator channel (PCFICH) that can inform the UE about the

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49/54 number of OFDM symbols used for PDCCHs, and can be transmitted in each subframe; physical downlink control channel (PDCCH) that can inform the UE about the allocation of SHP and DL-SCH resources, and hybrid ARQ information related to DL-SCH, and may contain the grant of uplink programming; physical hybrid ARQR indicator channel (PHICH) which may contain hybrid ARQ ACK-NAKs in response to uplink transmissions; shared physical downlink channel (PDSCH) that can contain DL-SCH and PCH; physical multicast channel (PMCH) that can contain the MCH; physical uplink control channel (PUCCH) which may contain hybrid ARQ ACK / NAKs in response to downlink transmission, may contain programming (SR), and may contain CQI reports; shared physical uplink channel (PUSCH) that can contain UL-SCH; and physical random access channel (PRACH) that can contain the preamble of random access.

[0096] In one aspect, a channel structure is provided that preserves low PAR properties (at any given time, the channel is contiguous or evenly spaced in frequency) from a single carrier waveform.

[0097] It should be understood that the modalities described here can be implemented in hardware, software, firmware, middleware, microcode, or any combination of these. For a hardware implementation, processing units can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) ), programmable door arrangements in

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50/54 field (FPGAs), processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions described here, or a combination of these.

[0098] When the modalities are implemented in software, firmware, middleware or microcode, program code or code segments, they can be stored in a machine-readable medium as a storage component. A code segment can represent a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, or any combination of instructions, data structures, or instructions for program. A code segment can be coupled to another code segment or to a hardware circuit when passing and / or receiving information, data, arguments, parameters, or memory contents. Information, arguments, parameters, data, etc., can be passed, forwarded or transmitted using any appropriate means including memory sharing, message passing, token passing, network transmission, etc.

[0099] For a software implementation, the techniques described here can be implemented with modules (for example, procedures, functions and so on) that perform the functions described here. Software codes can be stored in memory units and executed by processors. The memory unit can be implemented inside the processor or external to the processor, in which case it can be communicatively coupled to the processor through various means such as

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51/54 known in the art.

[0100] With reference to Figure 9, a system 900 is illustrated that can facilitate transitions between different modes of rest in a mobile device associated with a wireless communication environment. For example, the 900 system can reside at least partially within a mobile device (for example, 116). It should be recognized that the 900 system is represented as including function blocks, which can be function blocks that represent functions implemented by a processor, software, or combination thereof (for example, firmware). System 900 includes a logical grouping 902 of electrical components that can act in combination.

[0101] For example, logical grouping 902 may include an electrical component for selecting a sleep mode based in part on a predefined sleep mode criterion, where the sleep mode can be an LS mode, a DS mode, or a non-sleep mode (eg CRX mode) 904. For example, selecting a sleep mode may involve switching from one sleep mode to another sleep mode. According to one aspect, the non-sleep mode can be considered a special mode associated with the LS mode, where, for the non-sleep mode, the disabled period can be set to 0, so that the mobile device (for example, 116) can be in a continuously activated state. In addition, logical grouping 902 may comprise an electrical signaling component related to a 906 standby mode. For example, signaling may comprise explicit signaling (for example, control signal) and / or implicit signaling (for example,

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52/54 example, a predefined condition associated with the predefined sleep mode criterion has been met). In addition, the 900 system may include a 908 memory that holds instructions for performing functions associated with electrical components 904 and 906. Although shown to be external to memory 908, it should be understood that one or more electrical components 904 and 906 may exist within memory 908.

[0102] Going back to Figure 10, a system 1000 is illustrated that can facilitate transitions between different sleep modes on a mobile device associated with a wireless communication environment. System 1000 can reside within a base station (for example, 102), for example. As shown, system 1000 includes function blocks that can represent functions implemented by a processor, software, or combination thereof (for example, firmware). System 1000 includes a logical grouping 1002 of electrical components that can act in combination. Logical grouping 1002 can include an electrical component for selecting a sleep mode based in part on a predefined sleep mode criterion, where the sleep mode can be an LS mode, a DS mode, or a non-sleep mode (e.g., CRX mode) 1004. For example, selecting a sleep mode may involve switching from one sleep mode to another sleep mode on a mobile device (for example, 116) associated with the base station. According to one aspect, the non-rest mode can be considered a special mode associated with the LS mode, where, for the non-rest mode, the deactivated period can be set to 0, so that the

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53/54 mobile device (for example, 116) may be in a continuously activated state. In addition, logic grouping 1002 may comprise an electrical signaling component related to a resting mode 1006. For example, signaling may comprise explicit signaling (for example, control signal) and / or implicit signaling (for example, a condition default setting associated with the default sleep mode criterion has been met). In addition, logical grouping 1002 may include an electrical component for scheduling data transmissions 1008. For example, scheduling data transmissions may refer to uplink and downlink data transmissions and / or control information between the station base and a mobile device. The scheduling of data transmissions can be such that data transmissions can be performed at times when a mobile device is in an activated period for a downlink transmission and / or an activated period for an uplink transmission. The programming of data transmissions can be based in part on the sleep mode associated with the mobile device (for example, 116). In addition, system 1000 may include memory 1010 which retains instructions for performing functions associated with electrical components 1004, 1006 and 1008. While shown to be external to memory 1010, it should be understood that one or more of electrical components 1004, 1006, and 1008 can exist in memory 1010.

[0103] What has been described above includes examples of one or more modalities. Evidently, it is not possible to describe every conceivable combination of

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54/54 components or methodologies for the purpose of describing the aforementioned modalities, but a person of ordinary skill in the art may recognize that many additional combinations and permutations of the various modalities are possible. Therefore, the modalities described are intended to cover all such changes, modifications and variations that are included in the inventive concept and scope of the attached claims. Furthermore, to the extent that the term includes is used in the detailed description or claims, that term is intended to be inclusive in a similar way to the term comprising since understanding is interpreted when used as a transitional word in a claim.